Demonstration of Prototype Pump (IMAGE) Purdue University Caption Purdue doctoral student Charilaos Mousoulis demonstrates a prototype pump for drug-delivery patches that might use arrays of microneedles to deliver a wider range of medications than now possible with conventional patches. Credit Purdue University photo/Birck Nanotechnology Center Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.